PSA: Stop uploading your bitcoin wallet keys and credit cards to file-sharing sites

You’d be surprised at how many people do it daily.

What’s the first thing you do with a new credit card?

Peel off the sticky label on the front and activate it? Rush to the store to try it out for the first time? Or, do you post a
photo of it (both sides!) to social media for the world to see?

One of those answers was a big “no-no.”

That said, you’d be surprised at how many people do it daily.

In the past week, we were alerted to a high-profile file sharing site, which lets anyone search other users’ uploaded files. You
name it — it’s there — and credit cards are just the tip of the iceberg of sensitive files.

We spent a few hours searching the site with common search terms, and we found a ton of sensitive information — beyond credit
cards — including completed tax returns (with names, addresses, financial information, and Social Security numbers), scanned
passport photos, and password lists, which, if used, could allow an attacker access to online accounts. We even found bitcoin
wallet private keys, making it easy to hijack entire wallets full of bitcoin and other cryptocurrency. The results would regularly
include explicit images, regardless of search terms.

That kind of exposed data puts anyone whose information is out there at risk of theft, credit card and tax return fraud, identity
theft or impersonation, and extortion.

We’re not naming the site, because the sensitive data remains online. The site did not respond to a request for comment prior to

File-sharing sites have long been a semi-lawless corner of the internet where almost anything goes. Many previously popular sites
no longer exist — often shutdown for violating piracy laws for taking an unmoderated and lax approach to removing copyrighted
movies and music. Others preemptively pulled the plug on their own accord, for fear of also facing criminal charges.

Of the few that still exist, nearly all have been at the center of privacy breaches. More often than not, it’s been as a result of
careless uploading by the user themselves.

I know — hell, even you know — this shouldn’t need to be said, but please stop putting your personals on the internet.

With enough exposed data out there already, don’t make it any easier for the criminals.


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